LOW SPEED tank slapper??!!??
Road Master
Joined: Jul 2006
Posts: 886
Likes: 4
From: Virginia
I'm thinking the neck bearings need tightening. My Ultra would ride straight and true hands off the bars as long as you had throttle or constant speed on it. Slowing down to a stop, about 2200 rpm the bars would start to tank slap without hands on the bars. Had the neck bearings tightened and the problem went away regardless of what load I was carrying. You may be just getting to the point they should be adjusted.
6th Gear
Joined: May 2009
Posts: 12
Likes: 1
I just did a test ride on a new Harley Road Glide Ultra
and wen slowing down I got a full on tank slapper when I let go go the Handel bars
This is normal according to Harley
Is this bill s@&$t ?
Is the a good fix for this like a Stering stabilizer
Other than the low speedtank slapper Stering problem
The bike rode just fine.
Honestly unless I can find a perminute fix for this
It ts a definite deal breaker.
and wen slowing down I got a full on tank slapper when I let go go the Handel bars
This is normal according to Harley
Is this bill s@&$t ?
Is the a good fix for this like a Stering stabilizer
Other than the low speedtank slapper Stering problem
The bike rode just fine.
Honestly unless I can find a perminute fix for this
It ts a definite deal breaker.
Road Captain
Joined: Sep 2011
Posts: 661
Likes: 2
All good info thus far...
VERY curious problem... The RPM-link is significant/intriguing and that you can feel a suspicious vibration through the rear brake... The tour-pak connection is odd but not out of the realm... I assume that you have checked all engine mounts, stabilizers and wheel bearings... Perhaps the RPM 'connection' is that it creates a peculiar 'harmonic' that triggers/enables this tank-slap pheno... There is a fair amount of lateral flex in that frame and with an additional 'issue' such as neck-bearing, wheel bearing, engine mount, stabilizer problem and added tour-pak/weight... Who did the work for the tour-pak docking/mounts... Check that mount and the rear shocks symmetry... I am just thinking out loud here guys...
VERY curious problem... The RPM-link is significant/intriguing and that you can feel a suspicious vibration through the rear brake... The tour-pak connection is odd but not out of the realm... I assume that you have checked all engine mounts, stabilizers and wheel bearings... Perhaps the RPM 'connection' is that it creates a peculiar 'harmonic' that triggers/enables this tank-slap pheno... There is a fair amount of lateral flex in that frame and with an additional 'issue' such as neck-bearing, wheel bearing, engine mount, stabilizer problem and added tour-pak/weight... Who did the work for the tour-pak docking/mounts... Check that mount and the rear shocks symmetry... I am just thinking out loud here guys...
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